Nanjing Zhongshan Membrane Switch Co., Ltd.
Nanjing Zhongshan Membrane Switch Co., Ltd. Over 20 Years of Membrane Switch Supplier
QC Standards
| Graphic Overlay Printing | Spelling mistake | Not allowed |
| Incorrect front | Not allowed | |
| Dimension error | >0.3mm is Not allowed | |
| Color | Less than 2 levels with the specified Pantone or RAL colour | |
| Dot impurities | Diameter less than 0.2mm | |
| Distance between two impurities is more than 50mm The number of impurities is less than 2 within 100cm² | ||
| Linear impurities | Width is less than 0.2mm,length is less 0.4mm in panel surface. | |
| Distance between two impurities is more than 50mm | ||
| Window impurities | Diameter is less than 0.3mm in the center ofthe window | |
| Circuit Layer Printing | Routing error | Not allowed |
| Circuit Line width | >0.3mm is not allowed | |
| Position offset | >0.4mm is not allowed | |
| The key size deviation | >0.2mm is not allowed | |
| Dot impurities | Diameter less than 0.5mm | |
| Distance between two impurities is more than 20mm | ||
| The number of impurities is less than 3 within 100cm² | ||
| Linear impurities | Width is less than 0.3mm, length is less than 1mm | |
| Distance between two impurities is more than 50mm | ||
| The number of impurities is less than 3 within 100cm² | ||
| Connector | Loose | Not Allowed |
| Askew | Not Allowed | |
| Appearance | Product layered,the edge cracking | Not allowed |
| Stains | Not allowed | |
| Damage | Not allowed | |
| Performance | Life of the single button | With usual operation method,more than 500K times |
| Service life of the switch | In the standard environment and operation method, it is more than 12 months |